aboutsummaryrefslogtreecommitdiffstats
path: root/src/InetAddress.cpp
blob: 89152857cc31b4405ad534280c625010894dfe51 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
/*
   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Her Majesty the
   Queen in Right of Canada (Communications Research Center Canada)
   */
/*
   This file is part of CRC-DabMux.

   CRC-DabMux is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as
   published by the Free Software Foundation, either version 3 of the
   License, or (at your option) any later version.

   CRC-DabMux is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with CRC-DabMux.  If not, see <http://www.gnu.org/licenses/>.
   */

#include "InetAddress.h"
#include <iostream>
#include <stdio.h>

#ifdef _WIN32
#else
# include <errno.h>
# include <string.h>
#endif

#ifdef TRACE_ON
# ifndef TRACE_CLASS
#  define TRACE_CLASS(clas, func) cout <<"-" <<(clas) <<"\t(" <<this <<")::" <<(func) <<endl
#  define TRACE_STATIC(clas, func) cout <<"-" <<(clas) <<"\t(static)::" <<(func) <<endl
# endif
#else
# ifndef TRACE_CLASS
#  define TRACE_CLASS(clas, func)
#  define TRACE_STATIC(clas, func)
# endif
#endif


int inetErrNo = 0;
const char *inetErrMsg = NULL;
const char *inetErrDesc = NULL;


/**
 *  Constructs an IP address.
 *  @param port The port of this address
 *  @param name The name of this address
 */
InetAddress::InetAddress(int port, const char* name) {
  TRACE_CLASS("InetAddress", "InetAddress(int, char)");
  addr.sin_family = PF_INET;
  addr.sin_addr.s_addr = htons(INADDR_ANY);
  addr.sin_port = htons(port);
  if (name)
    setAddress(name);
}


/**
 *  Constructs a copy of inet
 *  @param inet The address to be copied
 */
InetAddress::InetAddress(const InetAddress &inet) {
  TRACE_CLASS("InetAddress", "InetAddress(InetAddress)");
  memcpy(&addr, &inet.addr, sizeof(addr));
}


/// Destructor
InetAddress::~InetAddress() {
  TRACE_CLASS("InetAddress" ,"~InetAddress()");
}


/// Returns the raw IP address of this InetAddress object.
sockaddr *InetAddress::getAddress() {
  TRACE_CLASS("InetAddress", "getAddress()");
  return (sockaddr *)&addr;
}


/// Return the port of this address.
int InetAddress::getPort()
{
  TRACE_CLASS("InetAddress", "getPort()");
  return ntohs(addr.sin_port);
}


/**
 *  Returns the IP address string "%d.%d.%d.%d".
 *  @return IP address
 */
const char *InetAddress::getHostAddress() {
  TRACE_CLASS("InetAddress", "getHostAddress()");
  return inet_ntoa(addr.sin_addr);
}


/// Returns true if this address is multicast
bool InetAddress::isMulticastAddress() {
  TRACE_CLASS("InetAddress", "isMulticastAddress()");
  return IN_MULTICAST(ntohl(addr.sin_addr.s_addr));		// a modifier
}


/**
 *  Set the port number
 *  @param port The new port number
 */
void InetAddress::setPort(int port)
{
  TRACE_CLASS("InetAddress", "setPort(int)");
  addr.sin_port = htons(port);
}


/**
 *  Set the address
 *  @param name The new address name
 *  @return 0  if ok
 *          -1 if error
 */
int InetAddress::setAddress(const char *name)
{
  TRACE_CLASS("InetAddress", "setAddress(char*)");
  if (name) {
    if (atoi(name)) {   // If it start with a number
      if ((addr.sin_addr.s_addr = inet_addr(name)) == INADDR_NONE) {
	addr.sin_addr.s_addr = htons(INADDR_ANY);
	inetErrNo = 0;
	inetErrMsg = "Invalid address";
	inetErrDesc = name;
	return -1;
      }
    } else {            // Assume it's a real name
      hostent *host = gethostbyname(name);
      if (host) {
	addr.sin_addr = *(in_addr *)(host->h_addr);
      } else {
	addr.sin_addr.s_addr = htons(INADDR_ANY);
	inetErrNo = 0;
	inetErrMsg = "Could not find address";
	inetErrDesc = name;
	return -1;
      }
    }
  } else {
    addr.sin_addr.s_addr = INADDR_ANY;
  }
  return 0;
}


void setInetError(const char* description)
{
  inetErrNo = 0;
#ifdef _WIN32
  inetErrNo = WSAGetLastError();
  switch (inetErrNo) {
  case WSANOTINITIALISED:
    inetErrMsg = "WSANOTINITIALISED A successful WSAStartup must occur before using this function.";
    break;
  case WSAENETDOWN:
    inetErrMsg = "WSAENETDOWN The network subsystem has failed.";
    break;
  case WSAEFAULT:
    inetErrMsg = "WSAEFAULT The buf or from parameters are not part of the user address space, or the fromlen parameter is too small to accommodate the peer address.";
    break;
  case WSAEINTR:
    inetErrMsg = "WSAEINTR The (blocking) call was canceled through WSACancelBlockingCall.";
    break;
  case WSAEINPROGRESS:
    inetErrMsg = "WSAEINPROGRESS A blocking Windows Sockets 1.1 call is in progress, or the service provider is still processing a callback function.";
    break;
  case WSAEINVAL:
    inetErrMsg = "WSAEINVAL The socket has not been bound with bind, or an unknown flag was specified, or MSG_OOB was specified for a socket with SO_OOBINLINE enabled, or (for byte stream-style sockets only) len was zero or negative.";
    break;
  case WSAEISCONN:
    inetErrMsg = "WSAEISCONN The socket is connected. This function is not permitted with a connected socket, whether the socket is connection-oriented or connectionless.";
    break;
  case WSAENETRESET:
    inetErrMsg = "WSAENETRESET The connection has been broken due to the \"keep-alive\" activity detecting a failure while the operation was in progress.";
    break;
  case WSAENOTSOCK:
    inetErrMsg = "WSAENOTSOCK The descriptor is not a socket.";
    break;
  case WSAEOPNOTSUPP:
    inetErrMsg = "WSAEOPNOTSUPP MSG_OOB was specified, but the socket is not stream-style such as type SOCK_STREAM, out-of-band data is not supported in the communication domain associated with this socket, or the socket is unidirectional and supports only send operations.";
    break;
  case WSAESHUTDOWN:
    inetErrMsg = "WSAESHUTDOWN The socket has been shut down; it is not possible to recvfrom on a socket after shutdown has been invoked with how set to SD_RECEIVE or SD_BOTH.";
    break;
  case WSAEWOULDBLOCK:
    inetErrMsg = "WSAEWOULDBLOCK The socket is marked as nonblocking and the recvfrom operation would block.";
    break;
  case WSAEMSGSIZE:
    inetErrMsg = "WSAEMSGSIZE The message was too large to fit into the specified buffer and was truncated.";
    break;
  case WSAETIMEDOUT:
    inetErrMsg = "WSAETIMEDOUT The connection has been dropped, because of a network failure or because the system on the other end went down without notice.";
    break;
  case WSAECONNRESET:
    inetErrMsg = "WSAECONNRESET";
    break;
  case WSAEACCES:
    inetErrMsg = "WSAEACCES The requested address is a broadcast address, but the appropriate flag was not set. Call setsockopt with the SO_BROADCAST parameter to allow the use of the broadcast address.";
    break;
  case WSAENOBUFS:
    inetErrMsg = "WSAENOBUFS No buffer space is available.";
    break;
  case WSAENOTCONN:
    inetErrMsg = "WSAENOTCONN The socket is not connected (connection-oriented sockets only)";
    break;
  case WSAEHOSTUNREACH:
    inetErrMsg = "WSAEHOSTUNREACH The remote host cannot be reached from this host at this time.";
    break;
  case WSAECONNABORTED:
    inetErrMsg = "WSAECONNABORTED The virtual circuit was terminated due to a time-out or other failure. The application should close the socket as it is no longer usable.";
    break;
  case WSAEADDRNOTAVAIL:
    inetErrMsg = "WSAEADDRNOTAVAIL The remote address is not a valid address, for example, ADDR_ANY.";
    break;
  case WSAEAFNOSUPPORT:
    inetErrMsg = "WSAEAFNOSUPPORT Addresses in the specified family cannot be used with this socket.";
    break;
  case WSAEDESTADDRREQ:
    inetErrMsg = "WSAEDESTADDRREQ A destination address is required.";
    break;
  case WSAENETUNREACH:
    inetErrMsg = "WSAENETUNREACH The network cannot be reached from this host at this time.";
    break;
  case WSAEMFILE:
	inetErrMsg = "No more socket descriptors are available.";
	break;
  case WSAEPROTONOSUPPORT:
	inetErrMsg = "The specified protocol is not supported.";
	break;
  case WSAEPROTOTYPE:
	inetErrMsg = "The specified protocol is the wrong type for this socket.";
	break;
  case WSAESOCKTNOSUPPORT:
	inetErrMsg = "The specified socket type is not supported in this address family.";
    break;
  default:
    inetErrMsg = "Unknown";
  };
#else
  inetErrNo = errno;
  inetErrMsg = strerror(inetErrNo);
#endif
  inetErrDesc = description;
}